Land records · Parcel maps · October 6, 2026
What Is a Spanish Land Grant? Records and Boundaries
What is a Spanish land grant? Land granted under Spanish or Mexican rule that U.S. treaties required honoring, plus where the records are kept.
What is a Spanish land grant? A Spanish land grant is a grant of land made by the Spanish Crown or its colonial officials before the area became part of the United States. Similar grants were made later by Mexico. When the U.S. acquired Florida, the Louisiana Territory, Texas, and the Southwest, treaties required the U.S. to respect valid private property rights, so many grants were reviewed and confirmed. Confirmed grants were surveyed and often patented, and they still shape property lines today, showing up as large irregular tracts that do not follow the township-and-range grid. This page is general land-records background, not legal advice.
Where Spanish and Mexican grants are found
| Region | Background |
|---|---|
| Florida | Spanish grants reviewed after the 1819 treaty with Spain |
| Louisiana and Missouri | French and Spanish grants after the Louisiana Purchase |
| Texas | Spanish and Mexican grants before Texas independence |
| California | Mexican-era ranchos reviewed after 1848 |
| New Mexico, Arizona, Colorado | Spanish and Mexican grants reviewed by U.S. tribunals |
Each region had its own process and records.
How claims were confirmed
After acquisition, Congress set up land commissions and courts to review claims. Claimants presented documents and testimony. Confirmed claims were surveyed by U.S. surveyors and, in many cases, received a federal patent. Some claims were rejected or reduced, and disputes sometimes took decades. See what is a land patent.
How grants appear on maps
In public-land states, confirmed grants are often shown on GLO township plats as irregular tracts labeled as private land claims or by grant name, with sections numbered around them. In California, rancho boundaries often appear on maps and in legal descriptions. See what is a GLO plat and what is the public land survey system.
Legal descriptions
Properties within former grants may be described by grant name and lot or tract number, by metes and bounds referencing the grant survey, or by later subdivision plats. Older descriptions use Spanish units such as varas, a unit of length that varied by region. Texas surveyors still encounter varas in older surveys.
Where to find records
- BLM GLO records: many private land claim surveys and patents.
- State land offices: for example, Texas holds Spanish and Mexican grant archives.
- State archives and libraries: original documents and translations.
- County recorders: later deeds and partitions within grants.
- University collections: many have digitized grant maps.
See how to find old plat maps.
Common grants in Texas
Texas has a large body of Spanish and Mexican grant records, and its land system did not use the federal PLSS. Abstracts and surveys based on early grants remain in use in property descriptions.
Community land grants
In New Mexico and southern Colorado, some grants were community grants with shared lands for grazing and wood. Their history has led to long-running disputes and continued interest in the records.
Bottom line
A Spanish land grant is land granted under Spanish, and later Mexican, rule that the U.S. reviewed and often confirmed after acquiring the territory. Grants appear as irregular tracts outside the PLSS grid and still underlie many property titles. Records are at the BLM, state land offices, archives, and county recorders. Find county offices via the Platbookmapper map.
What is a spanish land grant FAQ
Are Spanish land grants still valid?
Many confirmed grants form the basis of current titles, now held through later deeds.
Where were Spanish land grants made?
In Florida, Louisiana, Missouri, Texas, California, and the Southwest, among others.
What is a vara?
A Spanish unit of length used in old surveys, varying by region.
How do I find a Spanish land grant record?
Check BLM GLO records, state land offices, archives, and county recorders.
Why do grant boundaries look irregular on maps?
They predate the township and range grid and follow their original surveys.